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Results from an Einstein@Home search for continuous gravitational waves from Cassiopeia A, Vela Jr. and G347.3

Ming, J., Papa, M. A., Singh, A., Eggenstein, H.-B., Zhu, S., Dergachev, V., et al. (in preparation). Results from an Einstein@Home search for continuous gravitational waves from Cassiopeia A, Vela Jr. and G347.3.

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1903.09119.pdf (Preprint), 9MB
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Creators:
Ming, Jing1, Author
Papa, Maria Alessandra2, Author
Singh, Avneet1, Author
Eggenstein, Heinz-Bernd3, Author
Zhu, Sylvia1, Author
Hu, Yi-Ming1, Author
Prix, Reinhard3, Author
Machenschalk, Bernd3, Author
Beer, Christian3, Author
Behnke, Oliver3, Author
Allen, Bruce3, Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290
2Searching for Continuous Gravitational Waves, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_2630691
3Observational Relativity and Cosmology, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24011

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Free keywords: General Relativity and Quantum Cosmology, gr-qc
Abstract: We report results of the most sensitive search to date for periodic gravitational waves from Cassiopeia A, Vela Jr. and G347.3 with frequency between 20 and 1500 Hz. The search was made possible by the computing power provided by the volunteers of the Einstein@Home project and improves on previous results by a factor of 2 across the entire frequency range for all targets. We find no significant signal candidate and set the most stringent upper limits to date on the amplitude of gravitational wave signals from the target population, corresponding to sensitivity depths between 54 $[1/ {\sqrt{\textrm{Hz}}}]$ and 83 $[1/ {\sqrt{\textrm{Hz}}}]$, depending on the target and the frequency range. At the frequency of best strain sensitivity, near $172$ Hz, we set 90% confidence upper limits on the gravitational wave intrinsic amplitude of $h_0^{90\%}\approx 10^{-25}$, probing ellipticity values for Vela Jr. as low as $3\times 10^{-8}$, assuming a distance of 200 pc.

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Dates: 2019-03-212019-03-22
Publication Status: Not specified
Pages: -
Publishing info: -
Rev. Method: -
Identifiers: arXiv: 1903.09119
URI: http://arxiv.org/abs/1903.09119
Degree: -

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